影响车用质子交换膜燃料电池性能的诸因素

Some important factors that impact output voltage and efficiency of PEMFC were investigated through theoretical modeling and experiment on PEMFC. Analysis was done about effect of reactant gas pressure, stack temperature and humidification temperature on output voltage. Model was verified through experiment of PEMFC stack. Meanwhile, Working performance under heavy-duty for a long time and efficiency under three different gas pressures were tested. Relation between stack output power and efficiency were analyzed. Some discussion was conducted about transformation of energy efficiency on vehicle, through which some suggestion was provided about how to make PEMFC work on optimal condition.